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Old 12-14-2010, 04:07 AM   #1
rozen
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Problem with creating the development environment

Hi,

I am very new to Calibre having just acquired a nook. But I would like to play around with some of the code so I tried to a development install. Here were my steps:

1. I untared the file calibre-0.7.33.tar.gz in my home directory.

2. Changed directory to ~/calibre and read INSTALL.

3. Successfully executed
sudo python setup.py develop

4. Set the environmental variables

PWD=/home/rozen/calibre
CALIBRE_DEVELOP_FROM=/home/rozen/calibre/src

5. Put a print statement in src/calibre/__init__.py and in /src/calibre/main.py

6. Executed calibre-debug -g

7. Got the following output

rozen@atlas: ~/calibre > calibre-debug -g

Hello from ~/calibre/__init.py__.
main: args = ['calibre']
Starting up...
Failed to load high performance sqlite C extension
'Connection' object has no attribute 'enable_load_extension'
Started up in 0.774530887604

This was fine because I was hoping for that output of the two print statements as above.

Unfortunately, the GUI appeared but the window was black. If I i clicked about in the middle of the black window I got dialog windows that looked right for various functions in the window. For instance I clicked in the library part of the window and was able to open the viewer for one of my converted news feeds.

I am running Ubuntu 10.10 and Python 2.6.6. I have successfully done and used a straight install from source. I worry that my sequence above is erroneous or that I may have something left over from my prior installation. I don't see my error.

I would certainly appreciate any suggestions for increasing the visibility of the GUI.

Thanks in Advance,
Don
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Old 12-14-2010, 08:42 AM   #2
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I would advise against developing directly from source. While it is possible you will need to have every dependency (there are a lot) installed.

My recommendation is to install calibre using the binary installer. Then use the CALIBRE_DEVELOP_FROM variable to point to a local copy of the calibre source tree.

The basic steps would be:

1) Install binary (the one from calibre-ebook.com not the one in Ubuntu's repository).
2) Check out the source. Put it some place like ~/code/calibre. You would use bzr branch lp:calibre
3) Set your environment variable. It's a good idea to put it in your .bashrc or .bash_profile file so it is set every time you open a terminal. export CALIBRE_DEVELOP_FROM=/home/you/code/calibre
4) run calibre.
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Old 12-14-2010, 11:48 AM   #3
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As user_none said, detailed instructions are here:

http://calibre-ebook.com/user_manual/develop.html
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Old 05-29-2011, 03:55 PM   #4
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I really feel that I am overlooking something that should be obvious but I don't see the output from any print statements.

I downloaded the source into /home/rozen/cal/calibre.

The environmental variable is set:
CALIBRE_DEVELOP_FROM=/home/rozen/cal/calibre

I added

print "Hello, Don" to

/home/rozen/cal/calibre/src/calibre/__init__.py

When I run "calibredb" or "calibre-debug -g", I do not see the print output.


I also added the statement to __init__.py

x = 1 / 0

and when I run calibre-debug -g I do not get an error message.

I am sorry to bring up the same question a second time but I am flummoxed and need help with something that I should be seeing for myself.

I am running Ubuntu 10.10 and calibre 0.8.2, my device is a nook.

I am interested in writing a simple plugin as an introductory exercise and want to see some exploratory output from calibre itself. I am able to get print output from my plugin code.

Thanks in Advance,
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Old 05-29-2011, 03:58 PM   #5
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CALIBRE_DEVELOP_FROM=/home/rozen/cal/calibre/src
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Old 05-29-2011, 03:59 PM   #6
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Quote:
Originally Posted by rozen View Post
The environmental variable is set:
CALIBRE_DEVELOP_FROM=/home/rozen/cal/calibre
It needs to point to the src dir.

Code:
$ export CALIBRE_DEVELOP_FROM=/home/rozen/cal/calibre/src
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Old 05-30-2011, 12:38 AM   #7
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I really apologize for taking up your time on a Sunday of a Holiday weekend as a result of my inability to read carefully.

I am now up and going.

Thank You So Much,
Don
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